Annoying screen blanking

Folks,
I must admit I am frustrated again: since the last update yesterday,
a _very_ basic behavior changed with no apparent way of changing back.
Namely, now my screen blanks (with the monitor displaying "No signal")
after 2min of inactivity (sometimes it seems faster). This is truly
frustrating: it blanks while I read a longer email, when I read
something on the web, etc.
Sure enough, looking for a way to switch it off proved futile too:
* I couldn't find any setting for a Screensaver despite
going through System | Preferences for at least 5min, on
3-4 different attempts.
* Power Management says "Never" for both "Computer" and "Display"
to be put to sleep.
What gives?
P.S. https://bugzilla.redhat.com/show_bug.cgi?id=498505
--
Dimi Paun <dimi lattica com>
Lattica, Inc.